In article <7FqSc.65$8I2.59@bignews6.bellsouth.net>, mayday@nospam.net says...
>My dealer recommends "decarbonizing" the throttle body (by soaking it in
>solvent) of my Odyssey every 2 years for $179. He says it's due to the
>cheap gas and, god forbid, the carbon migrate all the way to the catalytic
>converter.
>I'm a little confused since I picture the throttle body as being before the
>cylinders/combustion, and the catalytic converter as after...
>But, none the less, has anyone heard of this and is it worth it?

It is worth it to your dealer to recommend this worthless service. They
make a hefty profit. A good way to double check this is to look at the
service schedule that came with your car. See if this so called service
is needed.
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Alex